baber/WOPTO huggingface dataset:
Patent GB-428541-A (GB)
Title: Improvements in high tension electric discharge tubes
IPC: H01J35/02
Filed: 1933-11-15
Abstract: 428,541. R÷ntgen - ray apparatus. MULLER AKT.-GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. Nov. 15, 1933, No. 31873. Convention date, Dec. 2, 1932. [Class 98 (i)] [See also Group XL] A U-shaped Rontgen-ray tube comprises two metal arms 21, 22 enclosing re-entrant insulators 23, 24. The arms 21, 22 are secured by flanged tubes to a rotatable disc 27 situated in the wall which encloses the source of high tension. The supply conductors pass through inlet insulators 25, 26 which carry travelling rollers 29, 30 for flexible conductors so that a limited rotation is possible about an axis bisecting the angle between the arms 21, 22. The disc 27 may also be made capable of vertical motion.
Patent GB-640960-A (GB)
Title: Improved nylon fabrics
Filed: 1947-12-03
Abstract: The physical properties of fabric comprising orientated nylon fibres, in which the nylon contains hydrogen-bearing amide groups, are improved by treating the heat-set fabric, in the absence of alcohols, by impregnation with a non-volatile acidic catalyst which yields a saturated aqueous solution having a pH below 3 and, while the fabric is maintained at fixed dimensions, with anhydrous formaldehyde vapour at 100-250 DEG  C. until the nylon contains at least 0.5 per cent by weight of combined formaldehyde.  Catalysts mentioned are ammonium chloride, calcium chloride, phosphoric acid, oxalic acid, maleic acid and p-toluenesulphonic acid. Polyamide-forming reactants that may be used in making the nylon fibres are dibasic carboxylic acids such as glutaric, adipic, pimelic, suberic, azelaic, sebacic, diglycolic, terephthalic, and p-phenylene diacetic acids; diamines, such as tetramethylenediamine, pentamethylene-diamine, hexamethylenediamine, m-phenylenediamine, p-xylylenediamine, triglycoldiamine and bis-(p-aminocyclohexyl)methane; and primary monoaminomonocarboxylic acids such as 6-aminocaproic and 12-aminostearic acids. Interpolymers may also be used.  The fabric is preferably treated with the formaldehyde for 15-30 minutes at 130-150 DEG  C., until at least 1.5 per cent has combined with the fabric.  In one example, a satin fabric woven from drawn polyhexamethylene-adipamide yarn is soaked for 16 hours at room temperature in 1 per cent aqueous ammonium chloride solution, excess solution removed and the fabric wound on a tube.  The fabric is dried for 5 hours at room temperature and then for 5 minutes at 150 DEG  C., treated with anhydrous formaldehyde vapour at 150 DEG  C. for 15 minutes, and finished by standard processes. Specifications 461,236, 461,237 and 552,097, and U.S.A. Specifications 2,071,250 and 2,130,948 are referred to.
Patent GB-146784-A (GB)
Title: Improved dilator for surgical and similar use
IPC: A61M29/00
Filed: 1919-12-19
Abstract: 146,784. Bender, C. Dec. 19, 1919. Dilating-instruments. -An appliance for treating stricture comprises a holder 1 and two flexible body members 2 grooved at 4 on their inner sides. These two members can be separated to any desired extent by the insertion of a suitable core 5, which at one side at the rear end is formed with a rack 6 and terminates in a finger-piece 7. After being pushed in to a certain extent, the rack engages a pinion attached to a knob 9, the rotation of which causes the further movement of the core in the grooves. When the core has been fully inserted, it is withdrawn and replaced by the next larger size. If desired, the core may be hollow, so as to form a small irrigating tube.
Patent GB-1056495-A (GB)
Title: Method and apparatus for continuously producing calcium alkoxy alcoholates
Inventor: BRADLEY WILLIAM RICHARD
IPC: B01J19/18
Filed: 1963-08-13
Abstract: A continuous process for the preparation of calcium alkoxy alcoholates by reacting calcium carbide with a glycol ether of formula either (i) ROCH2CH2OH, where R is an alkyl group containing 1 to 6 carbon atoms, or (ii) R1OCH2CH2OCH2CH2OH where R1 is alkyl group having from 1 to 4 carbon atoms, comprises:-  (a) Passing the glycol ether through an agitated zone of excess calcium carbide, (b) introducing into the reaction zone sufficient carbide to maintain an excess, and (c) removing the product from the reaction zone.  The specified ether glycol is 2-methoxy ethanol.  Concentrations of product obtained specified are 1 to 15% by weight of calcium and preferably 7 to 10%.  Preferred embodiments are a residence time of 5 to 100 minutes and a reaction zone temperature in the range 160 DEG to 260 DEG  F.  The reaction may be effected in the apparatus of Specification 1,056,496.
Patent GB-1189302-A (GB)
Title: Improvements in or relating to Coatings
Inventor: BROWN GEORGE REGINALD
IPC: C09D125/08
Filed: 1966-07-16
Abstract: 1,189,302. Coatings. DUNLOP CO. Ltd. 13 July, 1967 [16 July, 1966], No. 32048/66. Heading B2K. [Also in Division C3] Tin plate is sprayed with a pigmented latex of a copolymer of styrene, butadiene, and a carboxylic acid which contains a reagent, which may or may not be a pigment, which cross-links the copolymer on stoving and which is a compound of a metal of Group V, VI, or VII or the iron vertical sub-group of Group VIII of the Periodic Table, the weight ratio of pigment to binder being at least 0.5:1. Suitable pigmentary cross-linking agents are iron oxides, chromium oxides, manganese dioxide. Prussion Blue, and PbMoO 4 . Other cross-linking agents include ferrous sulphate, ferrous ammonium sulphate, ferric alum, and manganese and iron naphthenate.
Patent GB-1517511-A (GB)
Title: Conveyor handling apparatus
IPC: B65G47/71
Filed: 1974-07-19
Abstract: 1517511 Ordering apparatus METAL BOX Ltd 15 July 1975 [19 July 1974] 32062/74 Heading B8R Batches of bacon slices 2 arriving randomly along three parallel conveying paths A, B and C are switched laterally between paths with a diverter 6 so as to produce the same flow rate along each path at the output end of the apparatus (e.g. for supplying a packing machine 12). The flow rate along each path is sensed downstream of the diverter and the diverter is operated according to the sensed information. The randomly spaced batches 2 at the input end are accelerated by a device 4 to produce a minimum predetermined spacing (details of the accelerator form the subject of Specification 1,510,785, Heading B8R). Sensors in the device 4 determine whether switching of any given batch between the paths by diverter 6 would reduce the spacing to less than a further predetermined value and, if so, inhibit operation of the diverter to transfer the given batch A retarding device 8 (details of the device being given in Specification 1,510,785) serves to reduce the spacing in each path to a predetermined constant level and laterally align the batches in each stream. There is also described a batching apparatus, Fig. 3, wherein a conveyer 26 beneath a bacon slicer is periodically accelerated to define batches, the batches are weighed by a device 30 and those batches falling outside a predetermined weight range are directed by diverter 32 for an accumulator 34 (the conveyer 26 is described in Specification 1,516,303, Heading B8R). Correct weight batches are distributed evenly over three output paths by diverter 36. Spacing and aligning devices 40 and 42 ensure uniform spacing in each stream and lateral alignment of the batches between the streams before these enter the associated packaging machine.
Patent GB-1422609-A (GB)
Title: Pressure regulators for compressed-air brake systems
IPC: B60T15/50
Filed: 1973-07-05
Abstract: 1422609 Fluid-pressure servomotor systems ROBERT BOSCH GmbH 5 July 1973 [6 July 1972] 32075/73 Heading G3P A pressure regulator for use in the path of airflow from a compressor 2 to a storage tank 3 of a motor vehicle compressed-air brake system, includes a non-return vent valve 37 which is pliant and rests against seating surface of a cap 32 without any stress to cover one or more vent holes. Thus, in use, a chamber 26 is vented via hollow shaft 19 and valve 37 substantially completely down to atmosphere pressure. Moreover, the valve 37 prevents the entry of water and dirt into the regulator. Compressed air entering the regulator at 6 passes through filter 8, passages 10, 11 and non-return valve 14 to the tank 3. When the pressure in the tank approaches a predetermined value a diaphragm 20, subjected to the tank pressure via passage 17, raises the shaft 19 until shoulder 23 thereon abuts a valve-member 24, whereby the chamber 26 is isolated from the vent valve. Further increase in tank pressure causes the diaphragm to raise the valve-member 24 thereby allowing access of tank pressure to chamber 26 where it forces piston 27 downwardly to open a no-load valve 29 for discharging the compressor air to atmosphere. Reduction in tank pressure causes closure of valve-member 24 and subsequent separation therefrom of the shoulder 23, whereby the chamber 26 is once again vented via valve 37, and the no-load valve 29 closes. A tyre inflating valve 13 is included.
Patent GB-792955-A (GB)
Title: Polyamide powder compositions and method for the production thereof
Inventor: STOTT LOUIS LATHROP
IPC: C08L77/00
Filed: 1954-07-01
Abstract: A moulding powder, suitable, e.g., for the cold pressing and sintering process claimed in Specification 792,954, comprises two polyamides of different melting-points, the lower melting one being 15-70 per cent by weight of the mixture and at least the higher melting one having average particle dimensions not greater than 40 microns.  Up to 85 per cent of the total volume of the powder may be finely-divided inert filler, e.g. diamond dust, silica, carborundum, chalk, alundum, tungsten carbide, copper, lead, iron, carbon, graphite, molybdenum disulphide, ceramic materials, e.g. titanium dioxide or titanates, magnetic metals or oxides, or polytetrafluorethylene.  Suitable polyamides are polyhexamethylene adipamide or sebacamide and polycaprolactam. The polyamide powders may be prepared by precipitation from solution (as in Specifications 690,936, 691,114 and 740,356).  The compositions may be granulated. In an example, polyhexamethylene adipamide powder (M.P. 271 DEG  C.) was prepared from clean waste nylon and polyhexamethylene sebacamide (M.P. 224 DEG  C.) from virgin material.  70 parts of the first powder were mixed with 20 of the second, tableted, ground and sieved to pass an 80 mesh screen. The composition may be used for sintered articles or for fusion coatings.  Specification 763,939 and 763,940 also are referred to.
Patent GB-841561-A (GB)
Title: Improvements in or relating to aircraft undercarriages
Inventor: ROY ROBERT
IPC: B64C25/60
Filed: 1955-11-09
Abstract: 841,561. Hydro-pneumatic shock-absorbers. BRITISH MESSIER Ltd. Nov. 9, 1956 [Nov. 9, 1955], No. 32097/55. Class 108(3). A hydro-pneumatic shock absorber for an aircraft undercarriage leg comprises a tube 27 projecting through the lower end of a casing 17 pivotally connected (at 12, 13,) to the aircraft (not shown), glands 30, 31, defining an annular chamber 77 in which is slidable a piston 40 rigid with the tube 27 and with which shock absorbing means are associated, the tube 27 having mounted at its lower end at least one landing wheel 28. The arrangement is such that when the undercarriage is loaded the tube 27 moves upwardly and projects through and beyond the upper end of the casing 17. As shown, the casing 17 is mounted for steering movement of the aircraft wheels 28 relative to a housing 11 carrying the pivot trunnions 12, 13, under the action of a steering mechanism 20. The chamber 77 is liquid filled, and communicates with a chamber formed by a bore 76 within the tube 27 and above a floating piston 64. The space beneath the piston 64 is charged with pneumatic pressure through a valve 62. Liquid passing from the chamber 77 to the chamber 76 or vice versa, has to pass through ports in a ring-like orifice head 44 disposed between a flanged ring member 43 and the upper face of the piston 40. The upper face of the head 44 is recessed in such way as to connect certain of the holes in each of which is disposed a compression orifice 48. A plate valve 52 is mounted so as to be able to slide axially into a position in which it closes the lower ends of the holes containing the orifices 48. The remaining holes in the head 44 contain rebound orifices 50 which are adapted to be closed by a plate valve 51 similar to the valve 52. Passages 70 lead from an annular space 69 below the head 44 to the chamber 76. Passages 72 lead from the chamber 76 to an annular recess 42 in the periphery of the piston and thus to the annular chamber defined by the lower endface of the piston 40. The recess 42 is connected with the space 69 by a restricted passage 73. A lug (Fig. 2, not shown) rigid with the housing 11, serves for a connection for a retraction jack. Rotation between the tube 27 and the casing 17 is prevented by means of torque links (Fig. 2, not shown). The piston 40 has sufficient clearance in the chamber 77 to permit expansion under high temperatures. A piston ring 54 prevents leakage.
Patent GB-448431-A (GB)
Title: Improvements in and relating to devices for sharpening the blades of safety razors
IPC: B24D15/08
Filed: 1934-11-08
Abstract: 448,431. Sharpening razors. SABOT, C. W., 36, Heathfield Road, Mill Hill Park, Acton, London. Nov. 8, 1934, No. 32115. [Class 60] A device for sharpening the blades of safety razors comprises a carrier consisting of a bar 7 adapted to support a blade 9 and provided with pegs 8 to engage the holes in the blade, members 10 being secured to the ends of the bar, and carrying side members 11 in which are mounted two hollow spindles 12. Each spindle has thereon a sleeve 13 carrying a hardened steel roller 14 having in its surface a single or multi-start helical groove 35, and the blade is pressed down onto the rollers by means of a hinged cover 15 carrying a ridge 16 faced with cork 17 and apertured at 19 to receive the pegs 8, the facing 17 engaging the blade upon depression of the cover 15. The members 10 have hook-shaped lower ends 36 engaging under rails 20 connected, by lugs 23, to end flanges 22 of a base 21 provided also with side flanges to contain a pad 25 of cork &c. forming a runway over which the rollers 14 are rolled upon reciprocation of the carrier on the rails, this action serving to sharpen the edges of the blade. Cork &c. cushions at the ends of the rails and between the rails and the pad 25 may be employed to deaden noise in operation ; the flanges of the base may serve as guides for the carrier, the rails being omitted. The blade may be pressed onto the rollers by spring action of the cover ; the device may be employed for single-edged blades.
Patent GB-755965-A (GB)
Title: Improvements relating to rotary wing aircraft
Inventor: LICKLEY ROBERT LANG
IPC: B64D1/22
Filed: 1953-11-19
Abstract: 755,965. Helicopters. FAIREY AVIATION CO., Ltd. Nov. 19, 1954 [Nov. 19, 1953], No. 32138/53. Class 4. [Also in Group XXX] A rotary wing aircraft has an opening in the bottom of its fuselage normally covered by a platform, and means for lowering the platform at will to a level below any undercarriage the machine may possess. The fuselage 5 is provided with an opening 4 into which fits a platform 3 supported at each corner by a cable 6, the cables passing through guides 12 and over pulleys 13 to a winch unit 14, 16, 17, 18 whereby the platform may be raised or lowered to enable men or stores to be loaded or unloaded when the aircraft is hovering over terrain unsuitable for a normal landing. Collapsible and removable hand-rails 19 may be provided on the platform and folding seats 20 may be provided in the fuselage in way of the opening 4. In an alternative arrangement the platform may be a pontoon for use on water, which in its raised position forms a faired protuberance sealed round its edges on the underside of the fuselage 5.
Patent GB-805510-A (GB)
Title: Improvements in or relating to electromagnetic waveguide couplings
IPC: H01P1/163
Filed: 1956-10-22
Abstract: 805,510. Waveguides. MARIE, G. R. P. Oct. 22, 1956 [Dec. 31, 1955], No. 32174/56. Class 40 (8). A three-stage transition member for coupling a rectangular waveguide to a cylindrical waveguide comprises (a) a first stage (Fig. 2) the cross-section at each end of which is rectangular; the length of the longer sides 27, 28 and 29, 30 of one rectangle being substantially twice the length of the longer sides 21, 22 and 23, 24 of the other rectangle; (b) a second stage (Fig. 3) one end of which is connected to and is identical with the larger end of the first stage and the other end is of cruciform cross-section having four branches, e.g. 41, 42, 43, 44 of equal length and (c) a third stage (Fig. 5) having one end connected to and identical with the cruciform end of the second stage and the other end of circular cross-section. The outer ends of the branches 41, 42, 43, 44 are bounded by arcs of a circle of the same radius as, and concentric with, the circular end of the third stage. The transition member is adapted to convert a H 01  wave introduced thereinto from a rectangular guide connected to its input end to a H 01  wave for propagation in a cylindrical guide connected at its output end. The manner in which the electric field changes during passage of such wave through the member and geometrical details of the shape of the complete member (Fig. 1, not shown) are described. The said member may be made by depositing copper electrolytically on a suitably worked aluminium mandrel, and dissolving the aluminium.
Patent GB-859590-A (GB)
Title: Improvements in gear pumps
IPC: F04C2/14
Filed: 1957-10-15
Abstract: 859,590. Gear pumps. BORG-WARNER CORPORATION. Oct. 15, 1957 [Nov. 5, 1956], No. 32256/57. Class 110 (2). In a gear pump having end bushings 19 loaded by spring and fluid-pressure the bushings are urged towards the gear faces on starting with a lesser spring pressure than during normal operating conditions. When the pump is operating, pressure-fluid is fed to a chamber 43 through a conduit 44, thereby retracting a piston 36 against the action of the spring 40, downward movement of the piston being limited by a snap-ring 45 disposed in the bushing 19. The arrangement is such that on starting the spring 40 is under less compression than during normal operating conditions.
Patent GB-324954-A (GB)
Title: Improvements in or relating to telephone instruments
IPC: H04M1/02
Filed: 1928-11-07
Abstract: 324,954. Pollak, J. E., (Associated Telephone & Telegraph Co.). Nov. 7, 1928. Exchange systems.-To hold an exchange line whilst communicating with an extension, two buttons ME and LE are provided which operate contact springs through levers 58, 59. Normally the instrument is connected to the extension. The depression of button ME operates levers 58 and 59 connecting the instrument with the exchange line whilst the depression of LE restores arm 58 to connect the instrument with the extension and to hold the exchange line. Redepression of ME reconnects to the exchange line. The whole of the connection is released by depression of the switch hook (not shown) which lifts the bar 69, 70 to restore the operated levers. The use of the apparatus is also described with a system where both main and extension instruments can be connected with the exchange line.
Patent GB-378284-A (GB)
Title: Improvements in or relating to cryptographic apparatus
IPC: G09C1/04
Filed: 1931-11-24
Abstract: 378,284. Ciphering - apparatus. GENTET, A., 72 bis, Rue de Flandre, Paris. Nov. 24, 1931, No. 32550. Convention date, Feb. 4. [Class 146 (ii).] A device for ciphering and deciphering messages comprises a base 1 formed with parallel grooves 1a in which a series of removable slides is adapted to move longitudinally, the slides being each composed of two sections 2 detachably coupled together and bearing a distinctive numeral and an alphabet arranged in a different order from those on the other sections. The sections are formed with rack teeth on the lower edge and each pair is adapted to engage a pinion 3 ar. ranged in the bottom of the corresponding groove, the pinions being carried by spindles 6 or sleeves 5 surrounding the spindles and being operated by knobs 7, 4 respectively. Secured to the sides of the base are members 9 carrying lenses 10, 11 arranged in a corresponding position relative to the two sections of each slide, and arranged by depolishing or otherwise obscuring of the margins to expose a small width only of the sections. The sections are arranged so that the numerals on the upper set followed by those of the lower set are in an agreed sequence, and the message to be ciphered is then set under the lens 10, the ciphered message being read through the lens 11.
Patent GB-255317-A (GB)
Title: Improvements in the manufacture of pistons for internal combustion engines
IPC: B23K1/18
Filed: 1925-12-24
Abstract: 255,317. Frohloff, H., and Wagener, H. Dec. 24, 1925. Pistons for internalcombustion engines of the kind consisting of a head of copper or copper alloy and a body of grey cast iron or steel &c. are made by inserting in the body d, previously pickled in hydrochloric acid &c., a. piston head a with a long side flange b, so that it rests on the gudgeon pin bosses or upon a ledge e or ribs f, then inserting in the gap g a paste consisting of a mixture of chemically pure iron, copper and borax, then heating to about 1000‹ C., then placing thereon a brass solder such as a ring i consisting of one or more turns and of diameter corresponding approximately to the external diameter of the head, and removing from the source of heat after the brass is melted, and slowly cooling. The head may have a collar c to centre the head and retain the flux and molten brass.
Patent GB-534251-A (GB)
Title: Improvements in or relating to adjustable electrical decade switch dial resistances
IPC: G01R1/20
Filed: 1939-12-21
Abstract: 534,251. Sets of resistances and condensers. SULLIVAN, Ltd., H. W., and GRIFFITHS, W. H. F. Dec. 21, 1939, No. 32640. [Class 37] Each, or any switch of a decade resistance is arranged to adjust two independent decades of different denominations alternatively. Each switch dial a, b, c has a zero contact with ten switch contacts on each side of it. To the upper ten contacts of the dial a are connected ten resistance coils k1 ... k10 each of 1,000 ohms resistance, and to the lower ten contacts are connected ten coils l1 . . . l10 each of 1 ohm resistance, forming " thousands " and " units " decades which are alternatively selected by a switch arm g. Similarly the switch arm h of the second dial b selects alternatively " hundreds or " tenths decades, and the switch arm i of the third dial c selects alternatively " tens " or " hundredths " decades, so that any three decades may be selected for use in any given resistance setting. Stops may be provided so that the switch arms cannot pass from the position of maximum resistance of one decade to any position of the alternative decade. The alternative decades may each have a separate zero contact which may be permanently connected together or may be connected at will either manually or by automatic means actuated either by the switch arm or by a masking cover which masks the engraving and numbering of the decade not in use. The invention is also applicable to decade inductances and condensers.